Metal polishing

The final finish that is acquired on the part that is being polished will be dependent on a variety of factors.

A lot of the brightness and levelling (surface smoothness) is obtained by our use of a high quality bright nickel electroplating process. However, this can only be achieved if the substrate (base material) is prepared to a standard suitable for decorative finishing.

Decorative finishing will essentially involve polishing the base material to a flaw free and smooth surface so as to optimise the finish that is acquired using our high brightness levelling nickel.

There are some materials that can be too rough or heavily corrode to allow us to acquire a suitable surface for obtaining the finish you desire.

The process of linishing involve rotating abrasive belts in various grades from coarse too especially fine and will be determined by the surface condition so as to acquire a smooth finish on a component.

Polishing will utilise a large diameter mops crafted of cloth or sisal rotating as a speed on a lathe like a machine to produce a bright reflective surface. Aiding the process will be the suitable polishing compounds coating the mops.

Please visit our website for further information about metal polishing and our other services.

Hard chrome plating

Hard chrome plating is an electrolytic method that deposits chrome for engineering applications from a solution composed of chromic acid.

The deposits that are applied can vary from .25 – 1,000 microns thickness for a wide range of applications.
The thinner deposits that are used are done so to substantially increase the life of components in wear applications or corrosive environments, also the thicker deposits would be used for salvaging and repairing damaged or worn components.

High hardness

Electrodeposited chrome is an extremely hard substance with typical values of 850 – 1050 HV (63 – 70 HRc) which relates back to the term ‘hard’ chrome.
Thus making it an extremely durable coating for wear resistant and abrasion resistant applications.

Corrosion resistance

Hard Chrome possesses a high resistance to atmospheric oxidation, and a good resistance to most oxidising and reducing agents, (aside from chlorides and other halides) leading to its wide-spread use in the Food and Chemical Industries.

Applications

– Hydraulic and pneumatic piston rods and cylinders
– Plastic and rubber rolls, moulds, dyes, screws etc.
– Automotive and mechanical components
– Press tools and punches
– Print cylinders and plates
– Food machinery
– Valves, gates and bodies
– Mining equipment
– Timber and paper processing equipment
– Pump shafts and rotors
– Textile components

Please visit our website for further information about hard chrome plating!

How does chrome plating work?

How exactly do you chrome plate an item?

Chrome plating is the process of applying a layer of chromium onto a material, most commonly metal. Although it’s sometimes used for the purpose of decoration, chrome plating can be used for a number of purposes, including the protection of material layers. It’s a fantastic combatant of metal corrosion too.

The process of chrome plating includes five (somewhat basic) stages. First of all, a high amount of attention is paid to the object that is going to receive chrome plating. This could be a number of things, so it isn’t really particular what this might be. A number of chemicals are used in order to completely degrease the metals, ensuring that the surface is completely free of any components that may cause the chrome plating process to fail.

For the next major stage of the chrome plating process, the treated metal with undergo a number of further treatments in order to smooth the surface. Ensuring that the metal surface is as smooth as can be, the chrome plating outcome will result in a much higher degree of integrity over a longer time period. After being completely sure that the surface is smooth, the metal is carefully placed into a vat filled with treatment solution, which allows the metal to be gradually warmed up to the perfect temperature in order to apply optimal chrome plating.

In the final stage of the chrome plating process, the actual plating can begin. A vat is filled with chrome (chromium) components, allowing the compounds to find their way into the metal surface. The amount of time in which the metal remains inside the vat will always depend on the degree of thickness that’s desired for chrome plating.

Chrome plating is a fantastic technology, as it allows metal items to deal with exposure for a number of years. The metal bumpers on the front of vehicles is a fantastic example of chrome plating that holds itself up for decades, only needing general maintenance to keep in top condition.

Interested in chrome plating? Visit our website here for more!

Metal finishing

Metal finishing is often used when treating the exterior of a metal product by applying a thin complementary layer to its surface.
There are many metal finishing processes available, that each can be used for a variety of purposes.

Metal plating

Metal plating machines use a chemical bath to apply a coat to, or alter the surface of a substrate with a thin layer of metal, which could be nickel or PTFE.
A metal plating finish provides a number of advantages: it can improve a product’s durability, resistance to corrosion, surface friction, and exterior appearance.
Although it offers many advantages, it isn’t suited for smoothing out surface defects.

Brushed metal

A brushed metal finish, unlike plating, is an effective way of smoothing out a surface and removing its imperfections.
These types of finishing machines manifest a uniform, parallel grain surface texture to a product.

Buff polishing

If you wish your product to have a smooth, non-textured finish, then a buff polishing machine might be the thing you require.
As expecting with buff polishing, a cloth wheel is used to buff the surface, which then produces a glossy shine.

Advantages of applying a finishing treatment to metal, include:
– Increased durability
– Attractive
– Enhanced electrical conductivity
– Higher electrical resistance
– Higher chemical resistance
– Higher tarnish resistance

Polishcraft, the surface finishing specialists in Birmingham